Please consider adding support for automatic public key lookup (e.g., via WKD or keyservers) when sending encrypted emails to non-ProtonMail users. This feature would reduce manual key exchange steps and make it easier to securely communicate with external PGP users — similar to how tools like Mailvelope handle it.

Proton Mail already supports Web Key Directory (WKD).
It doesn't work with custom domains out of the box, though.

This should be implemented with key transparency, right? I think it uses multiple public keystores https://proton.me/support/key-transparency

I think this should go with finer PGP management so the same key can be used across several emails (for the same user )

Please add automated key store lookups. It is tedious to do it manually.

For example, when mailing gmail users, Protonmail should automatically look for their public key in the FlowCrypt Attester Public Key Lookup

https://flowcrypt.com/lookup

Implemented, right?

the app I can use is gpg, their could be others. it can be done using a app I ponder why it is not imputted.

I can use app aka program to do this I am unsure why the Poop it is not imputed. Amen it is needed.

They were suppose to to this from the beginning but still haven't delivered on that promise but have managed to introduce a proper VPN service.

Just use a secure centralized key store is all I ask. It's too confusing for the general public. I also don't like sending it inline just because things happen.

Actually agree with this one. Obviously it should be user choice to upload to said keystore, but even integration with keybase.io would be a good place to start. there solves you're encrypted data storage problem.